Stapling-machine.



I. S. McCHESNEY. STAPLING MACHINE.

' 'APPLICATIOII FII ED FEB. 24, T915 Lwgfi fio Patented Sept. 11,1917.

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. II W ENTOR- Z M E QZ Jaw JHEAMH/V Mama/v51 ATT RNEY I. S. IVIcCHESNEY.

' STAPLING MACHINE. APPLICATION FILED FEB. 24, I915. 1 9 %96Patentedfiept. 11, 1917.

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A TTORNE Y time erase ramvr JOHN SHERMAN IVIoCI-IESNEY, OF CHICAGO,ILLINOIS, ASSIGNOR TO 3'. S. IVIGCHESNEY & 00., OF CHICAGO, ILLINOIS, ACORPORATION OF ILLINOIS.

STAPLING-MACHINE.

Specification of Letters Patent.

Patented Sept. 311, 191?.

Application filed February 24., 1915. Serial No. 10,369.

To all whom it may concern:

Be it known that I, JOHN SHERMAN Mo- CHnsNnY, citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have'invented a certain new and useful Improvement inStapling-Machines, of which the following is a full, clear, concise, andexact description, reference being had to the accompanying drawings,forming a part of this specification.

My invention relates to stapling machines and is of particular servicein effecting the application of staples to brooms in the process oftheir manufacture, though the invention is not to be limited to thisuse.

In practising my invention I employ a driver, an anvil, and means forefi'ecting relative movement between the driver and anvil, the driverand anvil being provided with formations for engaging staples orstapling wire therebetween. Each staple or stapling wire portion is bentinto holding relation with the work to which it is to be applied whenthe driver has been moved to the full extent toward the anvil.

My invention also has for its object the provision of a staple wiresupport, preferably a needle which operates in conjunction with theaforesaid. mechanism and which serves to prepare the way for the stapleand to present the staple to the work to which the staple is to beapplied. Mechanism is provided whereby the needle is ad vancedapproximately to position before the staple enters the work so that thestaple cannot have its formation completed before the position in whichit is. to be placed with respect to the work to which it is to beapplied has been fully determined. The needle also desirably operates inconjunction with the driver and anvil in bringing the staple to itsfinal shape. Where the invention is employed in a broom making machinethe anvil is desirably also in the form of a vise jaw movable toward andfrom a complemental jaw in which latter jaw the needle and driver arereeiprocated. By this arrangement I am enabled to collapse the bundlesof broom straw to the approximate shape of the brooms whereafter thestaples are passed through the collapsed bundles of straw and are.preferably engaged with bands that surround the brooms to keep thesebands from spreading and to maintain the brooms in shape.

I will explain my invention more fully by reference to the accompanyingdrawings showing the preferred embodiment thereof and in which Figure 1is a perspective view of the machine made in accordance with thepreferred embodimentof the invention; Fig. 2 is a view of the productresulting from the operation of the machine; Fig. 3 is a longitudinalsectional view of the upper part of the machine; Figs. 4 and 5 arelongitudinal sectional views, somewhat diagrammatic, of parts of theupper portion of the machine, these two views showing such parts indiffering relations; Fig. 6 is a view of the needle which is preferablyemployed; Fig. 7 is a View of a driver; and Fig. 8 illustrates anendless band which is desirably employed in forming the broom.

. Like parts are indicated by similar char actors of referencethroughout the different figures.

The broom forming bundle of straw 1 is passed, shoulder first, through aband 2 which is preferably endless, this band being formed of an ironrod welded at 3, though the form of band which is employed is immaterialto the invention. The machine includes a vise comprising a movable jawat and a stationary jaw 5 which latter jaw also constitutes thefoundation of the machine. Two rods 6 are fixedly attached at theirforward ends to the jaw 4, these rods being provided with rackformations 7 which are e11- gaged by the teeth of supplemental gears 8that are mounted upon a common shaft 9. One of these gears is providedwith a handle 10 whereby the shaft 9 may be turned and both segmentalgears 8 turned in unison whereby the jaw 4; may be moved back and forth.The broom with the band 2 placed about the same is interposed betweenthe jaws 4:, 5 of the vise, when jaw 4k is moved outwardly, whereafterthe shaft 9 is turned clockwise to press the band 2 into firm engagementwith the straw of the broom, to shape the broom. One or more of suchbands may be employed, though one is sufficient for certain types ofbrooms.

In order that the material of which the bands 2 are formed may be aslight as possible, the shape holding function of the band issupplemented by means of staples ll which are passed transverselythrough the broom and which desirably have eye forma; tions 11 11 attheir ends in which the s des of the i ssociate band are received asindicated most clearly in Fig. 5, the broom st-raw being omitted fromthis figure as, well, as from Fig. 4: for the sake of clearness. Afteresire may be integliallyfformedwith the platell.

This pawl; carrier is provided with vertical slots 16, preferably .twoin number, in which pawls or driving connections '17: are inter,-mediately, pivoted, the left hand endsof thesejpawls being. the heavierin order that the pawls may normally occupy the 'posie tioinsillustrated in Figs; 1 and13. When the rack platelet is moved forwardlythe pawls 17 will come into engagement, atitheir lowver ends, each withanotclr 18v provided ina needle 19 (which also acts as a staplingwiresupport), there beingonesuch needle in, association with each,pawl.Each needle has a nosellS)? at its. forwardend whereby the entry of,this forward portion among ,the straw isfacilitated, The'pawlcarrienlli is provided with] channel ways .on its bottom side which arein sliding fit with the needles. These channelavays maintain the needlesin fiXeddines of moveinent andimaintain the notches 18 in the same,planes with the paSXlS l7, illustrated most clearly inFig. 3. The topsides of'the needles.l9iare. ro= vided with longitudinal channel, ways.20 that ,liein the same verticalplanes with the vertical slots2l in themachine foundation. 5. Thestapling wire portions, 11 are preferablyinitially in the form of partially. made staples as illuS l'ated in Fig.-l and insuch forin 'they are dropped through the slots 91 into thechannel ways 20.: of the needles, 1%) that lal employ d topreparepassageways for or to guide staples, the initial. position of thestapleswithinthe channelways QObeing illustrated in Fig 4. Thedepositofathe staples within the channels 20. :is effectedbefore the plate 14is moved.forwardly. After snch deposit has occurred the plate l i ismoved forwardly in the manner described whereupon the drivers 22,,whoserear ends are rigidly secured to the. forward portion of the pawlcarrier- 15, are pushed forwardly. These drivers have. sliding, fitwithin the channels- 20 and are cone-aired at their. for; ward ends,asindicated at 22 to receivethe single bightinitigrllyformed in the.staple, as indicated ,in Fig, 4;, these cavitiesQQ taking part in,forming eyes in the stapleseas V ie se the. rack plate. 414. .is;mo.ved

Q EWQ 'FHM the 19m art er mov s therewith as these two elements are ofintegral i if it i n nd. he. P VL r e p she the drivers 22 forwardlywithin the channels 20 whereby the previously deposited staples 11 aremoved forwardly. The unbent, forward, ends of the staples are ultimatelybrought into engagement with the eyes embracing oppositesides of thebandQ to prevent.theseband sides: from spreading apart, whereby suchbandmaybe made of lighter materialthan wouldotherw-ise be requiredi toenable themto, maintain the broom in shape. Before-thedriversQQ' op-.crate, the needles 19 are desirably nearl-y or completely projected totheir; foremost; positions, as illustrated lIL-Fl Qf-So 4 and 15 inwhichthey bridge the gap between the vise aws; and 15-. v hen-the needleshave thus bridged the spacing between the vise-j aw-s-tlie pawls 17 are;disengaged i from the 1 notches. 18 by having. their upper ends come incontact with the-pawl releaser. 24:, than stationary.

Although ,the pawl ireleaserQl is stationary when .it functions it; ismaintained" in fixed relationwitlr the jaw eiby beingsecured tothe..rods 6as--indieated inaFig 1', whereby the? pawls 17: are .suretobereleased when theneedles 19 lh'avebeen brought to" their foremostposition to bridgel the gap between the jaws 1- and 5:whateverthewidtlrof=this gapmaybe Thus thejaw t may be -moved towardthe jaw v5 varying distances to suit the varying. .masses -of .broom:straw 6 inter posedv therebetweenc without changing the position. ofthenneedles w-ith a'espect to ith'e j awlel. when. the needles are-inthe foremost positions. y I

After. the staples have had the eyes 11 11 formed therein inthe mannerdescribed the .-lever.,12 -t11l'Il6Gl :lI1-1- clockwise directiontomove.the rack plate M'tothe-right, tqgetheimwith the paw-l :carrier -lifi henthe pawl carrier 15 gis -mov-eda suflioie'nt dis} tance .to the rightits rear face engages the shoulder. 25; :on, the rear ends of theneedles 19 .to. withdraw these rneedles to thepositibnlgenerally...indicated by dotted ':lines--in operatetombringvthe =-sides of-=the band 2 into. .the plane of the top of;theneedles whereby. the staples .11 are so positionedith'at the, 1 eyes.are sureto 1 be formed about the sides of the-bands.

WVhile I have herein shown and particularly described the preferredembodiment of my invention I do not wish to be limited to the precisedetails of construction shown as changes may readily be made withoutdeparting from the spirit of my invention, but having thus described myinvention I claim as new and desire to secure by Let ters Patent thefollowing 1. A stapling machine including ananvil; a needle for guidingstaples; a driver for a moving staples along the needle; mechanism formoving the driver and the needle toward the anvil; a driving connectionbetween said mechanism and the needle whereby the driver and the needleare initially moved toward the anvil together; and means operating uponsaid driving connection upon a predetermined advance of the needle anddriver for uncoupling said mechanism and the needle to thereafter permitthe driver to move alone toward the anvil.

2. A stapling machine including an an vil; a needle for guiding staples;a driver for moving staples along the needle; mechanism for moving thedriver and the needle toward the anvil; a driving connection be tweensaid mechanism and the needle whereby the driver and the needle areinitially moved toward the anvil together; means operating upon saiddriving connection upon a predetermined advance of the needle and driverfor uncoupling said mechanism and the needle to thereafter permit thedriver to move alone toward the anvil; chucks for holding work inposition to be stapled; and mechanism for causing approach of one chucktoward the other prior to movement of the needle and driver toward theanvil.

In witness whereof, I hereunto subscribe my name this sixteenth day ofFebruary A. D., 1915.

JOHN SHERMAN MCCHESNEY.

Witnesses:

G. L. CRAGG, ETTA L. WHITE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. 0.

